Article
Nanoscience & Nanotechnology
Zhanhong Ma, Xiaodong Li, Chengxi Zhang, Lyudmila Turyanska, Shan Lin, Xin Xi, Jing Li, Tiangui Hu, Junfei Wang, Amalia Patane, Lixia Zhao
Summary: An efficient protocol of anion exchange between different perovskite nanocrystals by post-synthesis offers a promising way to tune the chemical composition and optoelectronic properties, enabling fine-tuning of the nanocrystal fluorescence for white LEDs with high modulation bandwidth. The tunable optical emission and short fluorescence lifetime of the nanocrystals are exploited for fast and energy-efficient visible-light communication.
ACS APPLIED NANO MATERIALS
(2021)
Article
Physics, Applied
Xiang Zhang, Xiaoheng Yan, Lindsey J. Gray, Junwei Xu, Wenfa Xie, David L. Carroll
Summary: Metal halide perovskites face challenges as emitters in large area lighting devices due to the difference in carrier mobilities with organic buffer layers. However, this study introduces modulation of excitonic confinement to achieve precise control of white light emission.
APPLIED PHYSICS LETTERS
(2022)
Article
Chemistry, Physical
Huanhuan Wang, Zhuang Zhang, Jovana V. Milic, Liguo Tan, Zaiwei Wang, Rong Chen, Xin Jing, Chenyi Yi, Yi Ding, Yuelong Li, Ying Zhao, Xiaodan Zhang, Anders Hagfeldt, Michael Graetzel, Jingshan Luo
Summary: Commercialization of perovskite solar cells is hindered by operational stability issues, but the use of a water stable haloplumbate for interfacial modification shows promising results in enhancing efficiency and stability, as well as improving the controllability and repeatability of device fabrication.
ADVANCED ENERGY MATERIALS
(2021)
Article
Materials Science, Multidisciplinary
Dian Luo, Min-Chih Hou, Kang-Yu Wang, Chih-Hao Chang, Shun-Wei Liu, Chin-Wei Lu, Hai-Ching Su
Summary: An efficient tandem white OLED/LEC hybrid device is proposed by stacking a red OLED on top of a blue LEC with a sophisticatedly designed charge-generating layer (CGL), combining the advantages of both devices. The tandem device exhibits a high external quantum efficiency (EQE) of 21.53%, almost the sum of the EQEs of the two stacked devices. When fabricated on a diffusive substrate, the EQE can be further enhanced to reach 37.88%.
ADVANCED MATERIALS TECHNOLOGIES
(2023)
Article
Chemistry, Multidisciplinary
Hao Cui, Zhan Su, Yu Ji, Tao Lan, Jian-Bin Zhang, Juan Ma, Liu Yang, Yu-Hui Chen, Hao-Ran Shen, Jiaqian Wang, Lihui Liu, Kun Cao, Wei Shen, Shufen Chen
Summary: Single-component healthy white light was achieved by post-doping Mn2+ into blue perovskite nanoplates, resulting in improved stability and quality for white light-emitting diodes (WLEDs).
Article
Chemistry, Multidisciplinary
Shuxin Chen, Jidong Lin, Song Zheng, Yuanhui Zheng, Daqin Chen
Summary: High-quality backlit display requires color-converting materials. Metal halide perovskites (MHPs) with full spectral tunability and high color purity have shown potential in wide-color-gamut display. However, naked MHPs suffer from stability issues. In this study, amorphous-glass-protected CsPbX3 quantum dots (QDs) were prepared, which showed high photoluminescence quantum yields (PLQYs) and stability. The CsPbX3@glass QDs were used to construct white light-emitting diodes (wLEDs) and a prototype display device with vivid and wide-color-gamut features.
ADVANCED FUNCTIONAL MATERIALS
(2023)
Article
Chemistry, Multidisciplinary
Reza Rahighi, Somayeh Gholipour, Mohammed A. Amin, Mohd Zahid Ansari
Summary: This study developed a high-efficiency and more stable perovskite solar cell by embedding carbon cloth in carbon paste as the back contact. Compared to Au-based solar cells, this type of cell showed better stability and maintained a high power conversion efficiency under the same conditions.
Article
Computer Science, Information Systems
Xinyu Tan, Ismo Hakala
Summary: The increasing importance of operating systems (OSs) in the development of the Internet of Things (IoT) has been observed in the past decade. An event-driven OS is memory efficient and suitable for resource-constrained IoT devices and wireless sensors, but the program's control flow determined by events may not always be obvious. A multithreaded OS with sequential control flow is often considered clearer but memory consuming. A hybrid OS combines the strengths of the event-driven and multithreaded approaches. A hybrid OS called StateOS is proposed in this article, which is a memory-efficient event-driven cooperative threaded OS with partial real-time performance. It implements a hybrid task scheduler that combines two cooperative threaded subsystems on a priority-based preemptive scheduler, providing adequate real-time performance for IoT devices at a low memory cost.
IEEE INTERNET OF THINGS JOURNAL
(2023)
Review
Crystallography
Clara A. Aranda, Laura Calio, Manuel Salado
Summary: Perovskite solar cells have high efficiency and easy manufacturing, but stability issues need to be addressed for commercialization, which may be overcome by techniques like encapsulation to mitigate challenges posed by environmental factors.
Article
Nanoscience & Nanotechnology
Lukas Schmidt-Mende, Vladimir Dyakonov, Selina Olthof, Feray uenlue, Khan Moritz Trong Le, Sanjay Mathur, Andrei D. Karabanov, Doru C. Lupascu, Laura M. Herz, Alexander Hinderhofer, Frank Schreiber, Alexey Chernikov, David A. Egger, Oleksandra Shargaieva, Caterina Cocchi, Eva Unger, Michael Saliba, Mahdi Malekshahi Byranvand, Martin Kroll, Frederik Nehm, Karl Leo, Alex Redinger, Julian Hoecker, Thomas Kirchartz, Jonathan Warby, Emilio Gutierrez-Partida, Dieter Neher, Martin Stolterfoht, Uli Wuerfel, Moritz Unmuessig, Jan Herterich, Clemens Baretzky, John Mohanraj, Mukundan Thelakkat, Clement Maheu, Wolfram Jaegermann, Thomas Mayer, Janek Rieger, Thomas Fauster, Daniel Niesner, Fengjiu Yang, Steve Albrecht, Thomas Riedl, Azhar Fakharuddin, Maria Vasilopoulou, Yana Vaynzof, Davide Moia, Joachim Maier, Marius Franckevicius, Vidmantas Gulbinas, Ross A. Kerner, Lianfeng Zhao, Barry P. Rand, Nadja Glueck, Thomas Bein, Fabio Matteocci, Luigi Angelo Castriotta, Aldo Di Carlo, Matthias Scheffler, Claudia Draxl
Summary: Metal halide perovskites are a new type of solution processed semiconductors that can compete with traditional semiconductors in functionality, especially in optoelectronic devices. Despite breakthroughs, challenges remain in terms of stability, reproducibility, and toxicity.
Article
Chemistry, Multidisciplinary
Shilin Jin, He Yuan, Tao Pang, Manjia Zhang, Junyang Li, Yuanhui Zheng, Tianmin Wu, Ruidan Zhang, Zhibin Wang, Daqin Chen
Summary: This study improves the electroluminescent efficiency of lead-free double perovskites by introducing terbium doping and a guest-host strategy, achieving a significant increase in luminance and external quantum efficiency.
ADVANCED MATERIALS
(2023)
Article
Nanoscience & Nanotechnology
Xingjie Lv, Guoliang Yuan, Tom Wu, Zhibo Yan, Ben Xu, Guanghua Liu, Jun-Ming Liu
Summary: This study investigates the four different lifetimes of photocarriers in MAPbI(3) single crystal, shedding light on the physical mechanisms and facilitating the design of novel electronics with halide perovskite semiconductors.
ADVANCED ELECTRONIC MATERIALS
(2023)
Article
Chemistry, Analytical
Bingbing Lyu, Junxia Hu, Yani Chen, Zhiwei Ma
Summary: This study investigates the performance differences of quantum dots with different intermediate alloy shell layers in QLEDs, demonstrating that quantum dots with a ZnCdS intermediate layer exhibit deep electron confinement and shallow hole confinement capabilities, facilitating efficient injection and radiative recombination. The optimal devices show a superior T-50 lifetime of over 1000 hours.
Article
Nanoscience & Nanotechnology
Chaoran Chen, Jinlong Hu, Zhenhua Xu, Zhen Wang, Yousheng Wang, Lingxiang Zeng, Xianhu Liu, Yang Li, Yaohua Mai, Fei Guo
Summary: Using methionine as a passivation agent can significantly reduce trap-state density in perovskite films, improving carrier lifetime and enhancing the optoelectronic properties of solar cells. Solar cells made of methionine-mediated perovskite films exhibit higher photovoltage and improved stability compared to control devices.
ADVANCED COMPOSITES AND HYBRID MATERIALS
(2021)
Article
Chemistry, Physical
Muhibullah Al Mubarok, Yuri Choi, Rashmi Mehrotra, Yu Jin Kim, Rama Krishna Boddu, Inhui Lee, Jiyeong Kim, Sang Kyu Kwak, Ji-Wook Jang, Jungki Ryu, Sung-Yeon Jang
Summary: Efficient and stable TLHP-based photovoltaic and photoelectrochemical devices are reported, using a chemically protective cathode interlayer PDINN. The metal diffusion inward is suppressed by forming tridentate metal complexes, while effective electron extraction is achieved. The PV device retains over 81% after 750 hours at 60℃ and over 90% after 3100 hours at 23±4℃. The TLHP-based PEC devices achieve a record-high bias-free solar hydrogen production rate when coupled with biomass oxidation, surpassing the target set by the U.S. Department of Energy.
ADVANCED ENERGY MATERIALS
(2023)
Article
Chemistry, Physical
Liqian Liu, Hengqi Zou, Xinrui Miao, Hin-Lap Yip, Wenli Deng, Yong Cao
Summary: The rational synthesis of thiophene-based cross-coupled polymers on surfaces has been studied, showing the stepwise activation process and conversion mechanism from organometallic species to covalent polymers. Annealing at different temperatures revealed the role of Br adatoms in promoting C-H bond activation and formation of polymeric ribbons. This study supplements the reaction mechanism of thiophene-based coupling and provides a rational approach for synthesizing cross-linked functional materials.
PHYSICAL CHEMISTRY CHEMICAL PHYSICS
(2022)
Article
Chemistry, Physical
Tianqi Niu, Yue-Min Xie, Qifan Xue, Sangni Xun, Qin Yao, Fuchao Zhen, Wenbo Yan, Hong Li, Jean-Luc Bredas, Hin-Lap Yip, Yong Cao
Summary: The chemical structure and concentration of spacers significantly affect the characteristics of 2D capping layers in 2D/3D perovskite heterostructures. Density functional theory calculations show that spacer modifications can alter energy-level alignments at 2D/3D interfaces, impacting charge-transfer characteristics. Strong interactions between EDBE cations and inorganic [PbI6](4-) slabs enable controlled deposition of high-quality QW structures with improved performance in 2D/3D PSCs.
ADVANCED ENERGY MATERIALS
(2022)
Editorial Material
Chemistry, Physical
Chenchen Yang, Harry A. Atwater, Marc A. Baldo, Derya Baran, Christopher J. Barile, Miles C. Barr, Matthew Bates, Moungi G. Bawendi, Matthew R. Bergren, Babak Borhan, Christoph J. Brabec, Sergio Brovelli, Vladimi Bulovic, Paola Ceroni, Michael G. Debije, Jose-Maria Delgado-Sanchez, Wen-Ji Dong, Phillip M. Duxbury, Rachel C. Evans, Stephen R. Forrest, Daniel R. Gamelin, Noel C. Giebink, Xiao Gong, Gianmarco Griffini, Fei Guo, Christopher K. Herrera, Anita W. Y. Ho-Baillie, Russell J. Holmes, Sung-Kyu Hong, Thomas Kirchartz, Benjamin G. Levine, Hongbo Li, Yilin Li, Dianyi Liu, Maria A. Loi, Christine K. Luscombe, Nikolay S. Makarov, Fahad Mateen, Raffaello Mazzaro, Hunter McDaniel, Michael D. McGehee, Francesco Meinardi, Amador Menendez-Velazquez, Jie Min, David B. Mitzi, Mehdi Moemeni, Jun Hyuk Moon, Andrew Nattestad, Mohammad K. Nazeeruddin, Ana F. Nogueira, Ulrich W. Paetzold, David L. Patrick, Andrea Pucci, Barry P. Rand, Elsa Reichmanis, Bryce S. Richards, Jean Roncali, Federico Rosei, Timothy W. Schmidt, Franky So, Chang-Ching Tu, Aria Vahdani, Wilfried G. J. H. M. van Sark, Rafael Verduzco, Alberto Vomiero, Wallace W. H. Wong, Kaifeng Wu, Hin-Lap Yip, Xiaowei Zhang, Haiguang Zhao, Richard R. Lunt
Summary: The lack of consensus on reporting standards in LSC-PV research hinders fair performance comparison among reports. Standardized characterization protocols are necessary for emerging PV devices to harmonize with other PV devices. The commentary highlights common limitations in LSC literature and suggests best practices for moving forward to achieve meaningful advances in LSC-PV research.
Article
Chemistry, Multidisciplinary
Wanqing Cai, Muhammad Umair Ali, Ping Liu, Miao He, Cong Zhao, Ziming Chen, Yue Zang, Man-Chung Tang, Hong Meng, Hongyan Fu, Guodan Wei, Hin-Lap Yip
Summary: An efficient energy cascade channel is developed by introducing sodium bromide in mixed-halide perovskites, resulting in improved performance of blue perovskite light-emitting diodes.
Article
Chemistry, Multidisciplinary
Qin Yao, Yue-Min Xie, Yingzhi Zhou, Qifan Xue, Xin Xu, Yujia Gao, Tianqi Niu, Linghao Chu, Zhisheng Zhou, Francis R. Lin, Alex K. -Y. Jen, Tingting Shi, Hin-Lap Yip, Yong Cao
Summary: This study uses an ionic liquid, methylammonium acetate (MAAc), and bathocuproine (BCP) to modify wide-bandgap perovskite sub-cells and small-bandgap organic solar cells. MAAc effectively heals the defects in the perovskite film, improving the energy conversion efficiency, while BCP acts as a space layer to prevent direct contact between ZnO and the organic bulk-heterojunction, mitigating efficiency loss. The integration of these modified sub-cells enables the fabrication of monolithic n-i-p structured tandem solar cells with a maximum PCE of 22.43%.
ADVANCED FUNCTIONAL MATERIALS
(2023)
Review
Chemistry, Physical
Osbel Almora, Derya Baran, Guillermo C. Bazan, Carlos I. Cabrera, Sule Erten-Ela, Karen Forberich, Fei Guo, Jens Hauch, Anita W. Y. Ho-Baillie, T. Jesper Jacobsson, Rene A. J. Janssen, Thomas Kirchartz, Nikos Kopidakis, Maria A. Loi, Richard R. Lunt, Xavier Mathew, Michael D. McGehee, Jie Min, David B. Mitzi, Mohammad K. Nazeeruddin, Jenny Nelson, Ana F. Nogueira, Ulrich W. Paetzold, Barry P. Rand, Uwe Rau, Henry J. Snaith, Eva Unger, Lidice Vaillant-Roca, Chenchen Yang, Hin-Lap Yip, Christoph J. Brabec
Summary: This article summarizes the best achievements in the performance of emerging photovoltaic devices in various research subjects, as reported in peer-reviewed articles since August 2021. The article provides updated graphs, tables, and analyses of performance parameters, and compares them based on the photovoltaic bandgap energy and average visible transmittance. The scope of the report is expanded to include triple junction solar cells.
ADVANCED ENERGY MATERIALS
(2023)
Article
Chemistry, Multidisciplinary
Denghui Liu, Yanmei He, Weidong Qiu, Xiaomei Peng, Mengke Li, Deli Li, Junrong Pu, Jiaji Yang, Yiyang Gan, Guoxi Yang, Guanwei Sun, Chenyang Shen, Xinyi Cai, Shi-Jian Su
Summary: Three solution processable bipolar hosts with successively reduced triplet energies approaching the T-1 state of TADF emitter were developed and evaluated for high-performance blue OLED devices. The smaller T-1 energy gap between host and guest allows the quenching of long-lived triplet excitons, reducing exciton concentration and suppressing singlet-triplet and triplet-triplet annihilations. Triplet-energy-mediated hosts with high enough T-1 and better charge balance facilitate high exciton utilization efficiency and uniform triplet exciton distribution, achieving high EQE(max), long operational lifetime, and negligible efficiency roll-off.
ADVANCED FUNCTIONAL MATERIALS
(2023)
Article
Chemistry, Multidisciplinary
Baobing Fan, Wenkai Zhong, Wei Gao, Huiting Fu, Francis R. Lin, Reese W. -Y. Wong, Ming Liu, Chenhui Zhu, Cheng Wang, Hin-Lap Yip, Feng Liu, Alex K. -Y. Jen
Summary: Sequentially deposited organic solar cells (SD-OSCs) have received great attention due to their ability to achieve a more favorable morphology. However, the processing of SD-OSCs is challenging in preventing the penetration of small-molecule acceptors into the polymer donor layer. In this study, solid additives with varied electrostatic potential distributions and steric hinderance are introduced to investigate their effect on vertical component distribution.
ADVANCED MATERIALS
(2023)
Article
Chemistry, Multidisciplinary
Leyu Bi, Qiang Fu, Zixin Zeng, Yunfan Wang, Francis R. Lin, Yuanhang Cheng, Hin-Lap Yip, Sai Wing Tsang, Alex K. -Y. Jen
Summary: In this study, the roles of chloride-based additives and methylammonium-based additives in inverted FAPbI3-based perovskite solar cells were systematically investigated. It was found that these additives have different effects on the crystallization and phase transition of FAPbI3. By optimizing the amount of MACl, the highest efficiency of inverted FAPbI3-based perovskite solar cells was achieved.
JOURNAL OF THE AMERICAN CHEMICAL SOCIETY
(2023)
Article
Chemistry, Multidisciplinary
Baobing Fan, Wei Gao, Rui Zhang, Werner Kaminsky, Francis R. Lin, Xinxin Xia, Qunping Fan, Yanxun Li, Yidan An, Yue Wu, Ming Liu, Xinhui Lu, Wen Jung Li, Hin-Lap Yip, Feng Gao, Alex K. -Y. Jen
Summary: Organic photovoltaics (OPVs) have made significant progress recently, thanks to the use of well-designed non-fullerene acceptors (NFAs) with conjugated side-groups. Researchers have developed a new class of NFAs with localisomerized conjugated side-groups and studied their impact on device performance and stability. A device based on one of the isomers achieved an impressive efficiency of 18.5% and exhibited excellent photo- and thermal stability. A similar approach was applied to another polymer donor, resulting in an even higher efficiency of 18.8%. This work highlights the effectiveness of local isomerization in enhancing the photovoltaic performance and stability of OPVs based on fused ring NFAs.
JOURNAL OF THE AMERICAN CHEMICAL SOCIETY
(2023)
Article
Chemistry, Physical
Shuang-Qiao Sun, Xiuwen Xu, Qi Sun, Qin Yao, Yating Cai, Xin-Yi Li, Yan-Lin Xu, Wei He, Min Zhu, Xuan Lv, Francis R. Lin, Alex K. -Y. Jen, Tingting Shi, Hin-Lap Yip, Man-Keung Fung, Yue-Min Xie
Summary: This study develops a dual-interface engineering approach to improve the performance of all-inorganic wide-bandgap CsPbI2Br-based front sub-cells in perovskite/organic tandem solar cells (POTSCs). By mitigating the defects and carrier recombination induced by interface defects and perovskite grain boundaries, the CsPbI2Br-based front sub-cells achieve a high power conversion efficiency (PCE) of 17.0% and open-circuit voltage (V-OC) of 1.347 V. Furthermore, by integrating these dual-interface engineered front sub-cells with narrow-bandgap PM6:CH1007-based rear sub-cells, a record PCE of 23.21% is obtained for the POTSCs.
ADVANCED ENERGY MATERIALS
(2023)
Review
Chemistry, Physical
Yue-Min Xie, Qin Yao, Hin-Lap Yip, Yong Cao
Summary: Wide-bandgap perovskite sub-cells (WPSCs)-based tandem solar cells have attracted significant interest due to their ability to surpass the Shockley-Queisser limit. Monolithic perovskite/organic tandem solar cells (POTSCs) integrating WPSCs and small-bandgap organic sub-cells (SOSCs) are popular due to their simple fabrication method and compatibility with flexible devices. This study reviews existing p-i-n type WPSC-based p-i-n POTSCs and n-i-p type WPSC-based n-i-p POTSCs, highlighting their advantages and limitations, and discusses the influence of tandem device component properties on photovoltaic performance and existing device modification methods.
Article
Materials Science, Multidisciplinary
Shien-Ping Feng, Yuanhang Cheng, Hin-Lap Yip, Yufei Zhong, Patrick W. K. Fong, Gang Li, Annie Ng, Cong Chen, Luigi Angelo Castriotta, Fabio Matteocci, Luigi Vesce, Danila Saranin, Aldo Di Carlo, Puqun Wang, Jian Wei Ho, Yi Hou, Fen Lin, Armin G. Aberle, Zhaoning Song, Yanfa Yan, Xu Chen, Yang (Michael) Yang, Ali Asgher Syed, Ishaq Ahmad, Tiklun Leung, Yantao Wang, JingYang Lin, Alan Man Ching Ng, Yin Li, Firouzeh Ebadi, Wolfgang Tress, Giles Richardson, Chuangye Ge, Hanlin Hu, Masoud Karimipour, Fanny Baumann, Kenedy Tabah, Carlos Pereyra, Sonia R. Raga, Haibing Xie, Monica Lira-Cantu, Mark Khenkin, Iris Visoly-Fisher, Eugene A. Katz, Yana Vaynzof, Rosario Vidal, Guicheng Yu, Haoran Lin, Shuchen Weng, Shifeng Wang, Aleksandra B. Djurisic
Summary: Perovskite solar cells (PSCs) are highly promising in terms of power conversion efficiency, but commercialization still faces unresolved problems and obstacles. This article provides a concise summary of outstanding issues, challenges, and progress made in addressing them, offering expert viewpoints across various topics related to PSC commercialization. It aims to serve as a valuable resource for researchers in the field and facilitate discussions to overcome the outstanding challenges in this fast-developing area.
JOURNAL OF PHYSICS-MATERIALS
(2023)
Review
Nanoscience & Nanotechnology
Lixiu Zhang, Luyao Mei, Kaiyang Wang, Yinhua Lv, Shuai Zhang, Yaxiao Lian, Xiaoke Liu, Zhiwei Ma, Guanjun Xiao, Qiang Liu, Shuaibo Zhai, Shengli Zhang, Gengling Liu, Ligang Yuan, Bingbing Guo, Ziming Chen, Keyu Wei, Aqiang Liu, Shizhong Yue, Guangda Niu, Xiyan Pan, Jie Sun, Yong Hua, Wu-Qiang Wu, Dawei Di, Baodan Zhao, Jianjun Tian, Zhijie Wang, Yang Yang, Liang Chu, Mingjian Yuan, Haibo Zeng, Hin-Lap Yip, Keyou Yan, Wentao Xu, Lu Zhu, Wenhua Zhang, Guichuan Xing, Feng Gao, Liming Ding
Summary: Recently, there has been a surge in research on metal halide perovskite materials due to the significant improvement in the photovoltaic performance of perovskite solar cells. The exceptional optoelectronic properties and defect tolerance of metal halide perovskite make it suitable for various applications. This article provides a comprehensive review of the current progress and future prospects of metal halide perovskite materials in different applications including traditional optoelectronic devices and cutting-edge technologies such as neuromorphic devices and pressure-induced emission. The review highlights the fundamental knowledge, current progress, and challenges in each application, aiming to provide an overview of the development status and future research directions for metal halide perovskite materials and devices.
NANO-MICRO LETTERS
(2023)
